11089640 has 64 divisors (see below), whose sum is σ = 26265600. Its totient is φ = 4209408.

The previous prime is 11089633. The next prime is 11089643. The reversal of 11089640 is 4698011.

11089640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11089643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87257 + ... + 87383.

It is an arithmetic number, because the mean of its divisors is an integer number (410400).

Almost surely, 2^11089640 is an apocalyptic number.

11089640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11089640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13132800).

11089640 is an abundant number, since it is smaller than the sum of its proper divisors (15175960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11089640 is a wasteful number, since it uses less digits than its factorization.

11089640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 11089640 is about 3330.1111092575. Note that the first 4 decimals coincide. The cubic root of 11089640 is about 223.0004893177. Note that the first 3 decimals are identical.

The spelling of 11089640 in words is "eleven million, eighty-nine thousand, six hundred forty".